Troubled Waters
The reason for the falling out was simple: Pearl's disappearance. Both sides had doted on her, so when she went missing, they started blaming each other.
In a fit of anger, they cut off all contact and each sent their own people to search for her. But when nothing turned up, they ended up estranged for good.
But with Tobias's health failing, there was no point in keeping up the feud. So, the Korva